berkeliums造句

• Fourteen isotopes of berkelium were identified with mass numbers 238 252.
• Berkelium is a soft, silvery-white, radioactive metal.
• The discoveries of americium, berkelium, and californium followed soon.
• Berkelium is a soft, silvery-white, radioactive actinide metal.
• Similar results are obtained with berkelium ( IV ) fluoride.
• Most available berkelium toxicity data originate from research on animals.
• Berkelium and cerium are then separated with another round of ion-exchange treatment.
• Just over one gram of berkelium has been produced in the United States since 1967.
• Berkelium is relatively soft and has one of the lowest GPa ( 2 Pa ).
• The berkelium-249 isotope emits low-energy electrons and thus is relatively safe to handle.
• Upon ingestion by rats, only about 0.01 % berkelium ends in the blood stream.
• The maximum permissible amount of berkelium-249 in the human skeleton is 0.4 nanograms.
• In total, just over one gram of berkelium-249 has been produced at Oak Ridge since 1967.
• Berkelium metal can also be produced by the reduction of berkelium ( IV ) oxide with thorium or lanthanum.
• Berkelium metal can also be produced by the reduction of berkelium ( IV ) oxide with thorium or lanthanum.
• The known oxyhalides of berkelium include BkOCl, BkOBr and BkOI; they all crystallize in a tetragonal lattice.
• Berkelium ( III ) and berkelium ( IV ) hydroxides are both stable in 1 molar solutions of sodium hydroxide.
• Berkelium ( III ) and berkelium ( IV ) hydroxides are both stable in 1 molar solutions of sodium hydroxide.
• In all these organs berkelium might promote cancer, and in the skeletal system its radiation can damage red blood cells.
• Between 70 K and room temperature, berkelium behaves as a ionization potential of a neutral berkelium atom is 6.23 eV.